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2 years ago

15. Which answer choice contains all the factors of 10? A. 1, 10 B. 1, 2, 5, 10 C. 1, 2, 5 D. 2, 5

Mathematics

2 answers:

nikitadnepr [17]2 years ago

7 0

B. 1, 2, 5, 10 (To feel space)

Anvisha [2.4K]2 years ago

5 0

B. 1,2,5,10

Since
1*10 = 10
10*1= 10
2*5= 10
5*2 = 10

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$\dfrac{ \dfrac{x+3}{4x^2-16} }{ \dfrac{2x^2+10x+12}{2x-4} }$

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Write the divide fraction horizontally:
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$= \dfrac{x+3}{4x^2-16} \div \dfrac{2x^2+10x+12}{2x-4}$

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Factorise the numerators and denominators when possible:
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$= \dfrac{x+3}{4(x+2)(x-2)} \div \dfrac{ 2(x + 3) (x + 2)}{2(x-2)}$

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Convert the divide fraction to multiplication fraction
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$= \dfrac{x+3}{4(x+2)(x-2)} \times \dfrac{2(x-2)}{2(x+3)(x+2)}$

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Cancel the factors
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$= \dfrac{1}{4(x+2)} \times \dfrac{1}{(x+2)}$

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